398637466 has 8 divisors (see below), whose sum is σ = 599289300. Its totient is φ = 198874368.

The previous prime is 398637443. The next prime is 398637467. The reversal of 398637466 is 664736893.

It can be written as a sum of positive squares in 2 ways, for example, as 332296441 + 66341025 = 18229^2 + 8145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (398637467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221061 + ... + 222856.

Almost surely, 2^398637466 is an apocalyptic number.

398637466 is a deficient number, since it is larger than the sum of its proper divisors (200651834).

398637466 is a wasteful number, since it uses less digits than its factorization.

398637466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444368.

The product of its digits is 3919104, while the sum is 52.

The square root of 398637466 is about 19965.9075926941. The cubic root of 398637466 is about 735.9687449806.

The spelling of 398637466 in words is "three hundred ninety-eight million, six hundred thirty-seven thousand, four hundred sixty-six".